Foundry flask



A. J. KLIM EK FOUNDRY FLASK Jan. 13, 1953 2 SHEETS-SHEET 1 Filed Jan. 10, 1950 I INVENTOR. A. J Khme/Y Jan. 13, 1953 Filed Jan. 10, 1950 A. J. KLIMEK 2,624,926 I FOUNDRY FLASK 2 SHEETSSHEET 2.

@ H 6 u p" INVENTOR.

,4. J. ff/fmek ATT Patented Jan. 13, 1953 U N l 1 ED STAT s s PAT su t or F [6E FOUNDRY FLASK Anthony. J -Klimek, Terre Hautalnd. Application January 10, 1950', Serial No. 13?;809

2 Claims.

This invention relates to improvements in foundry flasks.

An object of the invention is the provision of a corner hinge construction for av snap flaskin which the hinged ends of a pair of right angularly disposed walls of the flask are sheared 01f at'an angle of 45 degrees with the sheared faces having interfltting stepped portions to afford rigidity to the structure, as well as to eliminate any tendency of twisting between the sections of the flask, a vertical slot being cut into eachface of the inner edge thereof to receive an end of a flexible member. which cooperates with the inter:- fitting stepped portien to eliminate escape of sand at the hinge.

Another object of the invention is the provision of a closing means forthe abutting'endsofa pair ofthe walls, the abutting ends being. diagonally opposite the hinged ends and movable away from each other to release the flask from the mold, theabutting ends having complementary interengaging means for retaining said ends in rigid relation with each other when. locked together.

A further object of the invention is the provision of a sturdy and rigid flask in which pairs of walls are secured firmly together to form two sections with the walls of each section being at right anglesto each other, each pair ofthe abutting ends of the flask having complementary interfitting grooves andribs with a hinge connecting one pair of abutting ends together and an improved form of latching means removably connecting thev other. pair of. abutting ends together.

A further object of the. invention is" the provision of a sturdy and duralllev snap flask-having means at one corner for opening. or closing the abutting ends and for retaining the ends open or closed, said ends. being formed with interfitting members for guiding said ends into rigid relation with plates at the movable elements of the flask formed of materials of high wear resistance to limit wear to a minimum.

This invention is best understood from a consideration of the following detailed description taken in conjunction with the accompanying drawings, nevertheless, it must be borne in mind that the invention is not limited to the disclosure. but is susceptible of such changes and modifications as shall define no material departure from the salient features of the invention as expressed in the appended claims.

In the drawings:

Figure 1 is a view in perspective of my improved flask,

Figure 2 is an enlarged plan view of one corner iii of my flask, showing an improved hin'ging, and sealing'means for the abuttingends of a pair of side walls.

Figure 3 is a greatly enlarged vertical section taken along the line 3-3 of Figure 2 and showing the interfltted sections of the abutting ends.

Figure 4 is a greatly enlarged fragmentary horizontal section taken through the latched abutting ends of another corner of the flask.

Figure 5 is a fragmentary end view in perspective of one of' the abutting ends shown: in Figure 4.

Figure 6 is a fragmentary end view in perspective of the other abutting end shown in Figure 4,

and

Figures. '7 and 8 areplan views of my flask showing my flaskv in closed and released positions; respectively.

Referring more particularly to the drawings, it will be-seen that a. flask formedof two; sections in and [I is rectangular in plan. Section lD-consists of a pair of side walls I2 and I3 rigidly secured together at right angles at the corner l4. Section II is composed of side walls and 16 secured rigidly together at right angles, atthe corner H.

The abutting end 20 and 2| of the respective walls l2 and 16 (Figure 2). areshearedofi atan angle of. 45 degrees so that a strap hinge 22 will permit the side walls to form an angle of. 90 degrees. The inclined face of the end 20 has secured thereon a strip of material 23 which is provided at its outer face with alternately disposed grooves 24 andribs 25. Theinclined face of the end 2 i. has a strip of material 26 secured thereto. and the outer faceof the material is provided with. alternate ribs 21 and grooves 28 interfitting respectively with the grooves andribs of the strips 23 to seal the corner 29 against the loss of sand. The strips 23 and 26 may be formed of metal, rubber or a compositionmaterial.

An auxiliary sealing device is employed atthe corner 29 and is in the form of a flat strip of rubber. 30 which has one end 3| secured in any approved manner in a vertical groove 32 in the end 21 of the wall I6. The other end 33 is re.-

ceived freely in a vertical groove 34 in the end' 20 of the wall l2. The elastic and flexible member 36 is bowed slightly outwardly at the centerso that when the walls l2 and I6 are at right angles to each other, the free end 33 of said member will be forced tightly in the groove 34.

The corner 35 (Figure 4) which is diagonally opposite the corner 29 has the free ends 36 and 31 of the respective walls l3 and iii in abutting relation when the flask is closed; The end 36 has an inclined face 36a protected by a wear plate 38 which has the inner beveled edge 39 fitting into a V-shaped groove 40 at the outer edge of a wear plate 4| secured by screws 42 to the outer face of the end 3! of the wall l5. Screws 43 fasten a. plate 44 and a block 45 triangular in cross section to the end 36 of the wall I3.

As shown in Figures 4, and 6, the inner faces of the block 45 is provided with alternately arranged ribs 50 and grooves 5|. Likewise, the plate 4| on the end 31 of the wall I5 has alternately disposed grooves 52 and ribs 53 interfitting with the respective ribs 50 and grooves 5| on the block 45 when the ends 36 and 31 of the respective walls I3 and I5 are in closed position. This structure provides rigidity, as well as preventing up and down movements between the sections.

The ends 36 and 31 are retained in closed or open position by a combined latching device and a toggle lever. For this purpose, a plate 55 (Figures l and 5) is secured at 56 to the outer face of the wall 45. The outer free end of said plate is provided with spaced bearings 51 for a pin 58 upon which is mounted an enlarged end 59 of an arm 69. The bearings 51 are located directly in front of the plate 33. A toggle lever 6| hinged on a pin 62 carried by ears 63 fixed to the wall I3. The inner end of the lever is U-shaped with the legs of the U-shaped member spanning the outer end 64 of the arm 88. The outer end is in the form of a bearing receiving a pin 65 carried by the legs of the U-shaped member. A handle '64 provided with a hand grip 61 extends rigidly from the bight portion of the U-shaped member.

The walls I2 and I5 have V-shaped pins 19 depending in integral formation from V-shaped sockets 7! attached by screws to the outer faces of said walls. The pins are adapted to be received by sockets secured to pattern boards (not shown) as is well known.

The upper and lower edges of the wall I2 and I5 are reinforced by metal plates 12. The side walls I3 and I6 have secured to the upper and lower edges metal wear plates 13. These plates protect those portions of the flask against Wear where they come into contact with other instrumentalities employed in connection with flasks.

The operation of my device will be obvious from the description supra. The flask I0 is shown in closed position in Figures 1 and 7. In this condition, the arm 69 and the toggle 6| are in close relation with the end 36 of the wall I3. At this time, the complemental grooves and ribs of the strips 23 and 26 are in interfitted relation and this is also true of the complemental ribs and grooves on the respective abutting ends of the walls I3 and I5. The elastic and protective strip 38, Figure 2, is in sealing position for the corner 29.

After the usual operations have been completed in the flask, the lever 6| is swung outwardly to the position shown in Figure 8, whence the rigid connections between the ends I 2 6 and the ends 3B3l' are broken so that the walls of the flask 65 may be spread apart suniciently to remove the 4 flask. It must be borne in mind that while the lever 6| and the arm release the ends 36 and 31, the ends are retained in a cooperative relationship so that they may be restored readily to their latched position by the return of the lever 6| as shown in Figure 7.

I claim:

1. A snap flask comprising a pair of side walls rigidly secured together and extended at right angles to each other to form an L-shaped member, a second pair of side walls rigidly secured together to form an L-shaped member, a hinge joining an end of one L-shaped member with an end of the other L-shaped member, means releasably connecting the remaining ends of said L-shaped members in abutting relation, each wall adjacent the hinge having a vertical slot formed therein inwardly of the hinge and extending the full height of said walls and an elastic flexible strip of substantial thickness having one edge secured in one of the slots, the other edge of said strip being freely received in the other slot, said strips extending the full length of said slots.

2. A snap flask comprising a pair of side walls rigidly connected together and extended at right angles to each other to form an L-shaped memher, a second pair of side walls rigidly secured together to form an L-shaped member, a hinge joining an end of one L-shaped member with an end of the other L-shaped member, means releasably connecting the remaining ends of said L-shaped members in abutting relation, the hinged ends and releasable ends of the L-shaped members having ribs and grooves for interfltting engagement, each wall adjacent the hinge having a vertical slot formed therein inwardly of the hinge and extending the full height of said walls, an elastic flexible strip of substantial thickness having one edge secured in one of the slots, the other edge of said strip being freely received in the other slot, said strip extending the full length of said slots.

ANTHONY J. KLIMEK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 960,025 Linn May 31, 1910 981,723 Voight Jan. 17, 1911 1,120,759 Swift Dec. 15, 1914 1,956,177 Rothacker Apr. 24, 1934 2,228,856 Spensley Jan. 14, 1941 2,235,451 Hines Mar. 18, 1941 2,242,421 Dodge May 20, 1941 2,308,479 Young Jan. 12, 1943 2,521,279 Becker Sept. 5, 1950 FOREIGN PATENTS Number Country Date 562,443 Great Britain July 3, 1944 864,797 France Feb. 3, 1941 

